My Inquiry
My Account
Semtech Corporation TDS3311P.C
- Part No.:
- TDS3311P.C
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 6-UFDFN
- Datasheet:
-
TDS3311P.C.pdf
- Description:
- SURGESWITCH, 1-LINE 33V EOS PROT
- Quantity:
- Payment:
- Shipping:
Inventory:9,592
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TDS3311P.C from Semtech is a transient diverting suppressor designed for high-energy EOS protection of 33V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, and stable 33V clamping across temperature and current range - deployed in USB PD, Type-C, and industrial load switch input protection.
For engineers reviewing the TDS3311P.C datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, real-world clamping behavior vs. conventional TVS, and validated alternatives for 33V bus protection where low dynamic resistance and temperature-stable clamping are critical.
Technical Context
The TDS3311P.C uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike standard TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge, not fixed dynamic resistance.
It operates over –40°C to +125°C with 33V reverse stand-off, 36.5V typical breakdown, and 37.5V max clamping at 40A (8/20μs), delivering <20mΩ dynamic resistance and 175pF junction capacitance - enabling robust protection without signal integrity compromise in high-speed interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 33V - defines maximum continuous DC operating voltage of protected line without leakage or degradation. |
| Clamping Voltage | 37.5V at 40A (8/20μs) - ensures downstream ICs rated ≤36V (e.g., USB PD controllers) remain within safe operating limits during surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 22–33V systems. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - eliminates need for secondary ESD stages in ruggedized portable and industrial ports. |
| Dynamic Resistance | 20mΩ - enables near-constant clamping by minimizing voltage rise (ΔV = I × R) across full 1–40A surge range. |
| Junction Capacitance | 175pF at 33V, 1MHz - compatible with USB 2.0 and low-speed industrial control lines; not suitable for USB 3.x/PCIe. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish, tape-and-reel (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three pins must be connected to maximize current sharing and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS or power rail); parallel connection ensures uniform current distribution and thermal derating across FET channels. |
Key Features
| Feature | Design Value |
|---|---|
| Constant Clamping Voltage | Clamps at 37.5V ±0.5V from 1A to 40A (8/20μs) and –40°C to +125°C - prevents overvoltage failure of downstream 33V-rated ICs under worst-case surge and thermal conditions. |
| FET-Based Shunt Architecture | Replaces pn-junction TVS with low-RDS(on) MOSFET triggered by precision voltage reference - eliminates linear VC = VBR + IPP×RDYN drift seen in diode-based protectors. |
| High-Energy Surge Rating | 1120W peak pulse power (8/20μs) - sustains repeated lightning-induced transients in industrial equipment and outdoor IoT nodes without parametric shift. |
| Low Leakage & High Temp Stability | 600nA max reverse leakage at 33V and +125°C - avoids system-level power drain in always-on battery-powered devices like smart meters. |
Applications
| USB Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–33V VBUS lines in USB Type-C PD ports against ESD, lightning surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at connector, clamping transients before they reach PD controller or buck converter. Use Value: Maintains 37.5V clamping across temperature - unlike TVS diodes whose clamping rises >4V from –40°C to +125°C, ensuring consistent margin for 36V-rated PD ICs. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., HS2950P) exposed to field wiring transients. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage stress on internal FET gate oxide and overvoltage protection circuitry. Use Value: Prevents latch-up or permanent damage to load switch during 1kV/42Ω IEC 61000-4-5 surges by holding clamping below 36V - within absolute max rating of most 33V-input switches. |
| Smart Meter Power Rail Protection | Robotics Motor Driver Power Input |
Use Scenario: Securing 24–33V auxiliary power rails in utility smart meters subject to induced surges on long external wiring. IC Role / Device Role / Timing Role: Single-component solution replacing multi-stage TVS+MOV networks, reducing BOM count and PCB area. Use Value: Delivers 40A surge capability in 1.6mm² footprint - 60% smaller than discrete TVS+capacitor solutions - while maintaining 33V working voltage compliance per IEC 61000-4-5. |
Use Scenario: Protecting 33V motor driver power inputs from back-EMF spikes and ESD events during robotic actuator commutation. IC Role / Device Role / Timing Role: Fast-acting shunt device that diverts inductive kickback energy away from driver IC's VIN pin and internal regulators. Use Value: 20mΩ dynamic resistance ensures minimal voltage overshoot (<1V) during 10A/μs dI/dt events - preserving driver IC reliability without requiring oversized input capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | 22V working voltage, 27.5V clamping at 40A - optimized for 20–22V USB PD and low-voltage industrial rails. | Lower clamping headroom for 33V systems; may exceed downstream IC absolute max ratings during 40A surge. | Select only if protecting ≤22V rails; verify VBR ≥25V and clamping <30V aligns with system margin. |
| SMAJ33A | 33V standoff, 53.3V clamping at 40A (8/20μs) - higher clamping due to fixed RDYN (~320mΩ) inherent to TVS diode architecture. | Larger 7.1mm × 6.2mm SMA package; 175pF capacitance same but clamping voltage rises >5V from –40°C to +125°C. | Acceptable for cost-sensitive designs where 53V clamping is tolerable; avoid in thermally constrained or high-reliability 33V systems. |
Compared with TDS2211P.C and SMAJ33A, the TDS3311P.C uniquely combines 33V operation with 37.5V clamping and temperature-invariant performance - making it the only option that guarantees sub-36V protection margin across full industrial temperature range without sacrificing surge rating or footprint.
Availability
TDS3311P.C is available at Aetrix Electronics and suitable for USB Power Delivery, industrial load switch protection, and smart meter power rail applications requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/REACH compliance.
Supply support for TDS3311P.C includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in high-performance analog and mixed-signal semiconductors for power management, protection, sensing, and connectivity.
The TDS3311P.C belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 24–33V industrial, automotive, and USB PD systems where stable clamping and thermal resilience are mandatory.
FAQ
What is the maximum continuous operating voltage for TDS3311P.C?
The TDS3311P.C has a reverse stand-off voltage (VRWM) of 33V, meaning it can reliably withstand up to 33V DC or RMS AC on the protected line without significant leakage or degradation. This makes TDS3311P.C ideal for 24V and 33V industrial buses, USB PD 3.0 VBUS, and other mid-voltage power rails where sustained voltage stability is required.
How does TDS3311P.C differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), the TDS3311P.C uses a triggered FET architecture that maintains ~37.5V clamping from 1A to 40A (8/20μs) and across –40°C to +125°C. This eliminates design uncertainty caused by temperature- and current-dependent voltage overshoot in traditional TVS solutions.
Can TDS3311P.C be used for USB 3.2 or Thunderbolt interface protection?
No - the TDS3311P.C has 175pF junction capacitance at 33V, which is too high for USB 3.2 Gen 1/2 (≤0.3pF recommended) or Thunderbolt signaling. It is intended for VBUS, CC, SBU, or power-rail protection only. For high-speed data lines, Semtech recommends pairing TDS3311P.C with ultra-low-capacitance devices like RClamp3371ZC (<0.25pF) on differential pairs.
What is the recommended PCB layout for optimal surge performance of TDS3311P.C?
Place TDS3311P.C as close as possible to the protected connector. Connect all three IN pins (4,5,6) via a single short, wide trace to the protected line, and tie all three GND pins (1,2,3) directly to a solid ground plane using multiple vias. Avoid thermal relief on GND pads and minimize trace length to reduce parasitic inductance - critical for achieving full 40A surge capability and sub-38V clamping.
Is TDS3311P.C compliant with RoHS, REACH, and halogen-free standards?
Yes - TDS3311P.C is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its molding compound meets UL 94V-0 flammability rating, and the lead finish is 100% matte tin, supporting lead-free reflow soldering per J-STD-020.
TDS3311P.C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 6-UFDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33V (Max)
- Voltage - Breakdown (Min):
- 36V
- Voltage - Clamping (Max) @ Ipp:
- 42V
- Current - Peak Pulse (10/1000µs):
- 35A (8/20µs)
- Power - Peak Pulse:
- 1470W (1.47kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 175pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (1.6x1.6)
TDS3311P.C FAQ
1.How can I place an order for TDS3311P.C through Aetrix?
Please submit a Request for Quotation (RFQ) for TDS3311P.C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TDS3311P.C reliable?
The price and inventory of TDS3311P.C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDS3311P.C is usually 5 days.
3.What payment methods are accepted for TDS3311P.C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDS3311P.C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDS3311P.C?
TDS3311P.C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDS3311P.C order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TDS3311P.C?
For technical support, including TDS3311P.C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDS3311P.C requirements.
6.How does Aetrix verify that TDS3311P.C is sourced from the original manufacturer or authorized distributors?
All TDS3311P.C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TDS3311P.C meets industry standards.
7.What is the process for return or replacement of TDS3311P.C?
All TDS3311P.C units undergo pre-shipment inspection (PSI). If there is an issue with TDS3311P.C, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TDS3311P.C part is unused and in its original packaging.
Return procedure for TDS3311P.C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TDS3311P.C Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
